There will be another method in our next SPM release. It's not ready yet though. Many people use the VBM toolbox for this sort of thing. Best regards, -John On 22 June 2012 09:58, SUBSCRIBE SPM Anonymous <[log in to unmask]> wrote: > Dear spm users, > > I am working on a longitudinal study. I have some questions about the best way to analyse my data. > I would like to know what is the best way to obtain annual percentage of volume change MAPS. I have heard about RAVENS maps: are they still used? Is there another method? > What about linear mixed model? > > Thanks for your help, > Charlotte